Configure

In Tile, widget options and style are separated. yawTtk merges them to
simplify and match as possible Tkinter way of coding. Remember that it is
only available if extend option is True. configure funcion is called
by __init__ and __setattr__ class method so there are 3
different ways to configure widgets.

In this example, widget style is explicitly defined. If it is not, yawTtk
gives one according to widget type and name. Next example shows different
possibilities of style determination by yawTtk. Notice that name
option is not necessary because of automatic naming in Tkinter.